Interface Recombination Current in Type II Heterostructure Bipolar Diodes

2014 ◽  
Vol 6 (17) ◽  
pp. 14785-14789 ◽  
Author(s):  
Marius Grundmann ◽  
Robert Karsthof ◽  
Holger von Wenckstern
Keyword(s):  
Type Ii ◽  
Interface Recombination ◽  
Bipolar Diodes ◽  
Recombination Current

The Interface Recombination Current of the CDS/CDTE Heterojunction Solar Cell

2008 ◽  
pp. 1348-1351 ◽  
Author(s):  
Zhang Lei ◽  
Wu Wei ◽  
Li Min ◽  
Zhao Zhanxia ◽  
Zhang Yuhong ◽  
...  
Keyword(s):  
Solar Cell ◽  
Heterojunction Solar Cell ◽  
Interface Recombination ◽  
Recombination Current

Type-II diode lasers based on interface recombination at 3.3μm

2002 ◽  
Author(s):  
Anthony Krier ◽  
Derek A. Wright ◽  
Victoria J. Ellarby ◽  
Victor V. Sherstnev ◽  
Konstantin D. Moiseev ◽  
...  
Keyword(s):  
Diode Lasers ◽  
Type Ii ◽  
Interface Recombination

EFFECT OF REMOTE BAND COUPLING ON NET RECOMBINATION CURRENT IN TYPE-II HETEROSTRUCTURES

2006 ◽  
Vol 05 (01) ◽  
pp. 119-129 ◽  
Author(s):  
A. E. BOTHA
Keyword(s):  
Room Temperature ◽  
Heavy Hole ◽  
Light Hole ◽  
Type Ii ◽  
Narrow Gap ◽  
Eigenvalues And Eigenvectors ◽  
Ohmic Behavior ◽  
P Matrix ◽  
Recombination Current ◽  
Analytical Expressions

Exact analytical expressions for the eigenvalues and eigenvectors of the six-band k · p matrix Hamiltonian for narrow-gap III–V semiconductors are used to derive an analytical expression for the transmission coefficient T in type-II heterojunctions. The remote band coupling is included via the two Luttinger-type parameters, γ1 and [Formula: see text]. The expression for T contains two separate contributions: one from electron to light-hole tunneling and the other from electron to heavy-hole tunneling. Using the expression for T, the net recombination current density J is defined and evaluated for the specific case of an InAs/GaSb heterojunction. Ohmic behavior is observed in J for small applied voltages V approximately in the range -0.15 to 0.075 eV. Outside of this range, J changes nonlinearly with respect to changes in V. Comparison of the heavy-hole and light-hole contributions to J shows that the heavy-hole contribution increases J by approximately 10% at room temperature. The results for the InAs/GaSb heterojunction are in qualitative agreement with recent experimental observations.

Effect of the interface recombination current fluctuations on 1/f noise of gated lateral bipolar transistors

2003 ◽  
Author(s):  
Gregory G. Romas, Jr. ◽  
Md Mazhar Ul Hoque ◽  
Zeynep Celik-Butler
Keyword(s):  
Bipolar Transistors ◽  
Current Fluctuations ◽  
Interface Recombination ◽  
Recombination Current

Band Alignment and Interface Recombination in NiO/β-Ga2O3 Type-II p-n Heterojunctions

2020 ◽  
Vol 67 (8) ◽  
pp. 3341-3347
Author(s):  
Hehe Gong ◽  
Xuanhu Chen ◽  
Yang Xu ◽  
Yanting Chen ◽  
Fangfang Ren ◽  
...  
Keyword(s):  
Band Alignment ◽  
Type Ii ◽  
Interface Recombination

Type II Solar Radio Bursts over Solar Cycle 21

1994 ◽  
Vol 144 ◽  
pp. 283-284
Author(s):  
G. Maris ◽  
E. Tifrea
Keyword(s):  
Solar Radio ◽  
Interplanetary Space ◽  
Impulsive Phase ◽  
Radio Bursts ◽  
Type Ii ◽  
Solar Radio Bursts ◽  
Strong Energy ◽  
Mass Ejection ◽  
Geophysical Effect ◽  
Radio Event

The type II solar radio bursts produced by a shock wave passing through the solar corona are one of the most frequently studied solar activity phenomena. The scientific interest in this type of phenomenon is due to the fact that the presence of this radio event in a solar flare is an almost certain indicator of a future geophysical effect. The origin of the shock waves which produce these bursts is not at all simple; besides the shocks which are generated as a result of a strong energy release during the impulsive phase of a flare, there are also the shocks generated by a coronal mass ejection or the shocks which appear in the interplanetary space due to the supplementary acceleration of the solar particles.

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

Ultrastructure of pulmonary microvasculature in acute endotoxemia

1978 ◽  
Vol 36 (2) ◽  
pp. 470-471
Author(s):  
R. G. Gerrity ◽  
M. Richardson
Keyword(s):  
Polymorphonuclear Leukocytes ◽  
Alveolar Epithelium ◽  
Endothelial Damage ◽  
Capillary Endothelium ◽  
Type Ii Cells ◽  
Type Ii ◽  
Interstitial Edema ◽  
Pulmonary Capillaries ◽  
Lung Ultrastructure ◽  
Fibrin Thrombi

Dogs were injected intravenously with E_. coli endotoxin (2 mg/kg), and lung samples were taken at 15 min., 1 hr. and 24 hrs. At 15 min., occlusion of pulmonary capillaries by degranulating platelets and polymorphonuclear leukocytes (PML) was evident (Fig. 1). Capillary endothelium was intact but endothelial damage in small arteries and arterioles, accompanied by intraalveolar hemorrhage, was frequent (Fig. 2). Sloughing of the surfactant layer from alveolar epithelium was evident (Fig. 1). At 1 hr., platelet-PML plugs were no longer seen in capillaries, the endothelium of which was often vacuolated (Fig. 3). Interstitial edema and destruction of alveolar epithelium were seen, and type II cells had discharged their granules into the alveoli (Fig. 4). At 24 hr. phagocytic PML's were frequent in peripheral alveoli, while centrally, alveoli and vessels were packed with fibrin thrombi and PML's (Fig. 5). In similar dogs rendered thrombocytopenic with anti-platelet serum, lung ultrastructure was similar to that of controls, although PML's were more frequently seen in capillaries in the former (Fig. 6).

Mitochondria microcrystals deposition in some inherited diseases of lipid metabolism.

1978 ◽  
Vol 36 (2) ◽  
pp. 256-257
Author(s):  
S. Laoussadi ◽  
A. Kahan ◽  
G. Aubouy ◽  
F. Delbarre
Keyword(s):  
Synovial Tissue ◽  
Storage Disease ◽  
Metabolic Diseases ◽  
Uranyl Acetate ◽  
List Type ◽  
Type Ii ◽  
Type Number ◽  
Lipid Storage Disease ◽  
Thin Sections ◽  
Mean Size

Several patients with Fabry's, Gaucher's diseases and hyperlipoproteinemia type II and with arthropatic manifestations were observed.As no histological explanation for these symptoms was available,an ultrastructural study of synovial tissue was done to establish an anatomoclinical relation.Material and Methods :synovial membrane samples were obtained by needle biopsies of the knee from three patients with arthropatic manifestations of each disease.They were fixed in 5% glutaraldehyde, postfixed in 1% osmium tetraoxyde and embedded in Epon 812. Thin sections coloured by uranyl acetate and lead citrate were observed with an Elmiskop I Siemens electron microscope.Two important phenomena were observed in synovial tissue:Specific patterns of each lipid storage disease,which are now well known.In all the three metabolic diseases, hydroxyapatite-like crystals were found. They are characterized by their intramitochondrial localization, without any relation with cristae,an anarchic disposition and a mean size of 550 A.Crystals may be found also free in the cytoplasm of synoviocytes Some micrographs suggest an evolution in four steps :a. mitochondria with only a few microcrystalsb. mitochondria stuffed with these structuresc. disruption of mitochondria membranesd. microcrystals appear free in the cytoplasm

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